Based on data from the 1980s, Sassen’s influential book ‘The Global City’ interrogated how changes in the occupational structure affect socio-economic residential segregation in global cities. Here, using data for New York City, London and Tokyo, we reframe and answer this question for recent decades. Our analysis shows an increase in the share of high-income occupations, accompanied by a fall in low-income occupations in all three cities, providing strong evidence for a consistent trend of professionalization of the workforce. Segregation was highest in New York and lowest in Tokyo. In New York and London, individuals in high-income occupations are concentrating in the city centre, while low-income occupations are pushed to urban peripheries. Professionalization of the workforce is accompanied by reduced levels of segregation by income, and two ongoing megatrends in urban change: gentrification of inner-city neighbourhoods and suburbanization of poverty, with larger changes in the social geography than in levels of segregation.

根据1980年代的数据，萨森的有影响力的著作《全球城市》质疑了职业结构的变化如何影响全球城市中社会经济住宅的隔离。在这里，我们使用纽约市，伦敦和东京的数据，重新设计并回答了最近几十年的问题。我们的分析表明，所有三个城市的高收入职业所占比例都在增加，而低收入职业有所减少，这为劳动力专业化趋势持续发展提供了有力的证据。纽约的隔离度最高，东京的隔离度最低。在纽约和伦敦，高收入职业的人们集中在市中心，而低收入职业则被推到城市边缘。劳动力的专业化伴随着收入水平的降低，